di=2000
s=1
xiao=int(input('输入销售额'))
if xiao<=3000:
    print('没有提成')
elif xiao>3000 and xiao<=7000:
    s=xiao*0.1
elif xiao>7000 and xiao<=10000:
    s=xiao*0.15
else:
    s=xiao*0.2
total=s+di
print(total)